up_copy_section: Improve function description

Add "Input Parameters" section to already existing definitions
and declarations of `up_copy_section` function.

arch/xtensa/src/esp32s3/esp32s3_textheap.c

@@ -236,7 +236,14 @@ IRAM_ATTR void up_textheap_data_sync(void)
  * Name: up_copy_section
  *
  * Description:
- *   Copy section from general temporary buffer(src) to special addr(dest).
+ *   This function copies a section from a general temporary buffer (src) to
+ *   a specific address (dest). This is typically used in architectures that
+ *   require specific handling of memory sections.
+ *
+ * Input Parameters:
+ *   dest - A pointer to the destination where the data needs to be copied.
+ *   src  - A pointer to the source from where the data needs to be copied.
+ *   n    - The number of bytes to be copied from src to dest.
  *
  * Returned Value:
  *   Zero (OK) on success; a negated errno value on failure.

include/nuttx/arch.h

@@ -885,13 +885,19 @@ bool up_dataheap_heapmember(FAR void *p);
  * Name: up_copy_section
  *
  * Description:
- *   Copy section from general temporary buffer(src) to special addr(dest).
+ *   This function copies a section from a general temporary buffer (src) to
+ *   a specific address (dest). This is typically used in architectures that
+ *   require specific handling of memory sections.
+ *
+ * Input Parameters:
+ *   dest - A pointer to the destination where the data needs to be copied.
+ *   src  - A pointer to the source from where the data needs to be copied.
+ *   n    - The number of bytes to be copied from src to dest.
  *
  * Returned Value:
  *   Zero (OK) on success; a negated errno value on failure.
  *
  ****************************************************************************/
-
 #if defined(CONFIG_ARCH_USE_COPY_SECTION)
 int up_copy_section(FAR void *dest, FAR const void *src, size_t n);
 #endif